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1 Q y Y O��,I Pchesapeake Drive Redwood City,CA 94063 (650)364-9600 FAX(650)364-9233 <br /> ® S e q[( 404 M Wiget Lane . Walnut Creek,CA 94598 (925)988 9600 FAX{925)988-9673 <br /> 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916)921-%00 FAX(9161 921-01-00 <br /> /, a�t'�y��� 1455 McDowell 81vd,North,Ste. D Petaluma,CA 94954 {707) 792-f865 FAX(707)792-0342 <br /> !� [R Jy 1 1551 Industrial Road San Carlos,CA 94470-41 1 t (650) 232-9600 FAX(650)232-9612 <br /> Pinnacle-C.P. Project: ARCO,5469, Stockton CA Sampled: 211 1/99 <br /> 3939 Cambridge Road,Ste.220 Project Number: NIA Received: 2/12199 <br /> Cameron Park,CA 95682 Project Manager: Mark Capps Reported: 311/99 <br /> Volatile Organic Compounds by EPA Method 8260A <br /> Sequoia Analytical-Sacramento <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Limits Limit "Result Units Notes* <br /> PL-14(4.5')(cnnfi_ nu _d) 5902174-14 T <br /> Surrogate: 1,2-DCA-d49020206 2/17/99 2/17/99 60..0-140 108 <br /> PI`-15(4.5') 5902174-15 <br /> Sszil • <br /> Tert-butyl alcohol 9020206 2/17/99 2/17/99 10.0 ND mg/kg <br /> Methyl tert-butyl ether 0.100 ND <br /> Di-isopropyl ether 0.100 ND <br /> Ethyl tert-butyl ether 0.100ND " <br /> Tert-amyl methyl ether 0.1 Op ND " <br /> Surrogate: 1..2-DCA-d460.0-140' 94.8N <br /> 5902174-16 SIW <br /> 'Tert-butyl alcohol 9020206 2/17/99 2/17/99 . 10.0 ND mg/kg <br /> Methyl tent-butyl ether 0.100 ND " <br /> Di-isopropyl ether 0.100 ND <br /> Ethyl tert-butyl ether 0.100 ND " <br /> Tert-amyl methyl ether 0.100 ND <br /> 94 " <br /> Surrogate: 1,2-DCA-d4 " 60.0-140 0 <br /> .8 % <br /> sequoia Analytical-Sacramento *Refer to end of report far text of notes and definitions. <br /> t . <br /> Ronald W. Bobel,Client Services Representative IR Page 10 of 15 <br /> ,� <br />